Buffing-roll.



PATENTBD JUNE l1, 1907.

M. PREVOST.

BUFFING ROLL.

APPLIoATIoN FILED JAN.11. 190s.

f jizz/672i@ NITED STATES PATENT Nonirica.

BUFFlNG-FIOLL.

Specification of Letters Patent.

Patented June 11, 190'?.

Application filed January ll, 1905. Serial No. 240,538.

To (t/f whom it 11i/ty concern.-

Be it known that I, MAGNUs PREVOST, of Haverhill, county of Essex, State of Massachusetts, have invented an Improvement in Bufling-Rolls, of which the following description, in connection with the accomp any ing drawings, is a specification, like characters on the drawings representing like parts` This invention relates to that class of buffing rolls which are employed in buffing the bottoms of shoes, and, more particularly, to certain improvements on the device shown in my prior' patent #155,388, dated AMarch 22, 1904.

Buffing rolls of the character above rcferred to ordinarily comprise a.cylindrical support with a covering of thick felt, over which the sand paper or similar :material is held. These fclts become worn down and occasionally torn, so that they have to be renewed with more or less frequency, according to the usage to which they are subjected.

The object of my invention is to provide a bufling roll of the above described character with means whereby the felt may be readily removed from the body of the roll, and a new felt substituted as readily in place thereof, without removing ythe roll from the shaft.

l accomplish this object by the means shown in the accompanying drawing, in

which:

Figure l is a plan view with some of the parts broken ai Yay, of a bufhng roll made according to my invention. Fig. 2 is an end view thereof. Fig. 3 is a sectional view on the line 3-3 of Fig. l. Fig. 4 is an end view showing the felt in a position in. which it is partly removed. Fig. 5 is a longitudinal sectional view on the line 55 of Fig. 2.

The cylindrical body felt support is constructed substantially the same in most particulars to that shown in my said prior patent, it comprising two semi-cylindrical metal sections a and Z), hinged together by a shaft c. The meeting faces of the sections at each end of the roll are respectively provided with seats a,'b, for receiving the ends of clamping bars d and e, shoulders a2, b2 being formed in said sections for the inner sides of saidbars, the faces of said shoulders being nearly at right angles to the surface of the roll. Each end of the bars (l and e is respectively provided with depending or inwardly projecting lugs d, e', which preferably extend to the bore of the shaft collars, and the adjacent or meeting faces of which are continuous with the adjacent sides or meeting faces of the bars, the faces of each bar being parallel when the roll sections are closed. The bars (l, e are secured to the body of the roll by screws s which pass through said lugs d', e from the adjacent or meeting `faces thereof, and approximately perpendicular thereto, and are threaded in the end collars of the sections. The felt f is attached by glue to a backing g of flexible material, preferably canvas, said backing being attached to said bars by being passed entirely around them, so that its end portions may lie beneath and be glued to the inner sides of its middle portion, as shown in said prior patent. The backing, however, is not connected to the surface of the body and is only connected thereto by means of the bars cl and e, and their attaching screws s. The bars d, e are the same length as the body of the roll, and the width of the 'feltj` and canvas backing g is also the same, the latter being notched, or cut away to permit the lugs (V, c to pass therethrough.

The manner of changing one felt for another is as follows: Assuming that the parts are in the position of Figs. 2 and 3, the roll is opened as shown in Fig. 4, and the sandpaper /t is removed. The screws s are then easily accessible without disturbing the canvas backing or felt, and may be readily re moved. W hen this has been donc the bars may be lifted upwardly or radially of the roll, until they are Vfree Vfrom the shoulders a2, b2, and then they may be pressed apart, as shown in Fig. 4, so that the Vfelt and its backing may be unwrapped from the roll. A new felt, which has previously been attached to a pair of bars similar to the bars d, c, by means of a backing similar to backing g and being glued to the latter, and allowed to dry while wrapped about a `form identical in size and shape with the roll body, is then wrapped upon and secured to the body on the shaft in reverse order, as will be obvious. The shoulders (IF, b2 are particularly advantageous in so doing, as the inner edges of the bars may be caught against them so that the backing may be drawn tight and the bars may be vforced into place more easily by rcason of the leverage which may thus be secured thereon. The screws s having been driven tightly into place, the roll will again be ready for use. The new felt will thus be attached without in any way disturbing its connection with the bars, so that it will be as securely held or attached to the roll body as IOO IIO

if it had been glued and otherwise attached thereto in the -first instance, and the glue had been allowed to harden and the felt to become shaped.

It will be apparent that it will only be necessary for a factory to be supplied with the extra felts attached to the bars, and that they may be changed in such a short time that the operation of the machine will not be seriously interfered with.

Having thus described my invention, what I claim'asnew and desire to secure by Letters Patent is 1. In combination with a bui'ling roll, a flexible, encircling, cushioning strip, means forremovably connecting said strip at one end to said roll, an attaching device connected to the opposite end of said strip and movable radially of the roll into and out of engagement therewith, and means for connecting said attaching device to the roll movable into and out of locking engagement therewith while said strip is in position thereon, substantially as described.

2. A buffmg roll comprising two pivoted sections forming a cylinder when closed, a flexible, encircling, cushioning strip terminating at the meeting faces of said sections, means for connecting said strip at one end to one section, an attaching device connected to the opposite end of said strip and movable radially into and out of engagement with the other section, and means for connecting said attachin device to said section movable into an out of locking engagement therewith while said strip is in position thereon and disposed to be held in locked position by said sections while they are closed, substantially as described.

3. In combination with a bufling roll having a longitudinal opening, providing seats at opposite sides thereof, a flexible, encircling, cushioning strip terminating at opposite sides of said opening, a pair of attaching bars respectively connected to the ends of said strip and movable radially into and out of engagement with said seats, and means for connecting said bars to said seats movable into and out of locking engagement therewith while said strip is in position on the roll, substantially as described.

4. A bu'l'ling roll comprising two pivoted sections forming a cylinder when closed, and having oppositely disposed seats, a pair of bars having coacting clamping faces, a flexible, encircling, cushioning strip respectively connected at its ends to said bars, means for removably connecting said bars to said sections in position on said seats, one of said bars being movable radially of the roll into and out of engagement with its seat and the connecting means therefor passing therethrough from its clamping face side to engage the section to which it is connected, substantially as described.

5. In combination with a buliing roll, having a pair of seats, a pair of longitudinally extending, holding bars movable transversely into and out of engagement with said seats, a liexible backing strip connected to said bar and adapted to encircle said roll, a cushioning felt connected by adhesive material to the outer side of said strip, and means for securing said bars on said seats movable into and out of locking engagement therewith when the bars are in position on said seats, substantially as described.

6. A buliing roll comprising two pivoted sections forming a cylinder when closed together, a pair of longitudinally extending clamping bars disposed at the meeting edges of said section, an inwardly extending lug on each end of each bar, means engaging said lugs and said sections respectively for reniovably securing said bars thereto, and an encircling cushioning strip connected at its ends to said bars, substantially as described.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses. i MAGNUS PREVOST.

l/Vitnesses:

L. I-I. HARRIMAN, I-I. B. Davis. 

